2. Discuss with your classmates more. Teachers' explanations may sometimes be incomprehensible, because teachers and classmates are not at the same level, and discussions with classmates are different. Everyone has the same language, fully participated in it and has a deep memory.

Don't get into trouble. Some problems are getting worse and worse, even if the brain gets bigger, it won't help. At this time, put aside the problem first, and then look at it later, which may suddenly open up.

4. Summarize more. Inducing and classifying the same problems will systematize knowledge.

5. Pay attention to cultivate interest. With interest, you have the motivation to learn, you will naturally learn more, and your learning ability will inevitably improve.

I hope it helps you!